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802.11 WLAN STANDARDS IEEE 802.11 (some of the time called 802.11x) is the bland name of a group of principles for remote systems administration identified with Wi-Fi. These remote systems are winding up more famous these days. It goes about as an other option to the wired system, however soon it might supplant the wired system totally. The convention depends on numerous entrance where a hub rivals different hubs to access the correspondence medium and to transmit the information. This WLAN standard was passed by Institute of Electrical and Electronics Engineers (IEEE) in June 1997. The numbering plan for 802.11 originates from the IEEE, who utilizes “802” as the name of a board of trustees for systems administration guidelines while “11” implies the remote neighborhood (WLANs) working gathering inside their 802 council. There are diverse models in this innovation: 1. 802.11(No Suffix) 2. 802.11b 3. 802.11a 4. 802.11g 5. 802.11n 6. 802.11ac 7. 802.11ad 1: 802.11(No Suffix): It was the first standard in this family discharged in 1997. 802.11 set up remote neighborhood arrange correspondence as a standard contrasting option to Ethernet. It utilized unregulated radio flagging recurrence (2.4 GHz). Then again, it had some genuine restrictions that kept it from showing up in business items like information rate was only 1-2 Mbps. It ended up noticeably out of date with the development of 802.11a and 802.11b. 2: 802.11b: This standard was approved in July 1999. It bolsters transmission capacity up to 11 Mbps which can be contrasted with customary Ethernet. It likewise utilizes a similar recurrence utilized by unique 802.11 standard i.e. 2.4GHz. Sellers regularly lean toward utilizing these frequencies to bring down their generation costs. 3: 802.11a: This standard was additionally discharged when 802.11b discharged. Because of its higher cost, 802.11a is typically found on business systems while 802.11b is for home market. It underpins data transfer capacity up to 54 Mbps and flags in a directed recurrence range around 5 GHz. 4: 802.11g: 802.11g endeavors to join the best of both 802.11a and 802.11b. 802.11g backings data transmission up to 54 Mbps, and it utilizes the 2.4 GHz recurrence for more noteworthy range. This recurrence can be impedance from microwave stoves, cordless telephones, and different machines utilizing the same 2.4 GHz go. It was approved in June 2003. 5: 802.11n: This change enhanced the past 802.11 norms by including Multiple Input Multiple Output radio wires (MIMO). 802.11n works on both the 2.4 GHz and the 5 GHz groups. It works at a most extreme net information rate from 54 Mbit/s to 600 Mbps. 6: 802.11ac: This is the most up to date age of Wi-Fi flagging that is utilized these days. It uses double band remote innovation, supporting concurrent associations on both the 2.4 GHz and 5 GHz. It offers data transfer capacity evaluated up to 1300 Mbps on the 5 GHz band in addition to up to 450 Mbps on 2.4 GHz. 7: 802.11ad: This revision characterizes another physical layer for 802.11 systems to work in the 60 GHz range. This recurrence band has essentially extraordinary engendering attributes than the 2.4 GHz and 5 GHz groups. Items actualizing this standard are being conveyed to showcase. Protocol Release Date Frequency (GHz) Bandwidth (MHz) Data Rate (Mbps) 802.11 Jun 1997 2.4 22 1,2 802.11a Sep 1999 5/3.7 20 6,9,12,18,24,36,48,54 802.11b Sep 1999 2.4 22 1,2,5.5,11 802.11g Jun 2003 2.4 20 6,9,12,18,24,36,48,54 802.11n Oct 2009 2.4/5 20/40 0-288/0-600 802.11ac Dec 2013 5/0.05-0.79 20/40/80/160 346/800/1733/3446 802.11ad Dec 2012 60 2160 0-6756

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